Finding the Third Proportional to 67,388 and 144,617.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,388 : 144,617.50 = 144,617.50 : x
2. Step 2: Convert to fraction form
   67,388/144,617.50 = 144,617.50/x
3. Step 3: Cross multiply
   67,388x = 144,617.50 × 144,617.50
4. Step 4: Simplify right side
   67,388x = 20,914,221,306.25
5. Step 5: Solve for x
   x = 20,914,221,306.25/67,388
6. Step 6: Final answer
   x = 310,355.28